1:54 PM H2NCH2CH2CHNH2 CH3 3. Draw structures corresponding to the following IUPAC names: (a) Triethylamine (b) N-Methylaniline (c) Tetraethylammonium bromide (e) N-Ethyl-N-methylcyclopentylamin (d) p-Bromoaniline
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A: The structure of cyclopentylisopropylamine is as follows,
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A: A,B,C,D are four compounds.The asteric mark(*) indicated for chiral centre in the below structures.
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A: Note : The compound having polar OH, NH2, HF can form hydrogen bonding between them. (see below).
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Q: H,N-NH,
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- γ-Butyrolactone (C4H6O2, GBL) is a biologically inactive compound that is converted to the biologically active recreational drug GHB (Section 19.5) by a lactonase enzyme in the body. Since γ-butyrolactone is more fat soluble than GHB, it is more readily absorbed by tissues and thus produces a faster onset of physiological symptoms. γ-Butyrolactone shows an absorption in its IR spectrum at 1770 cm−1 and the following 1H NMR spectral data: 2.28 (multiplet, 2 H), 2.48 (triplet, 2 H), and 4.35 (triplet, 2 H) ppm. What is the structure of γ-butyrolactone?The shrub ma huang (Section 5.4A) contains two biologically activestereoisomers—ephedrine and pseudoephedrine—with two stereogeniccenters as shown in the given structure. Ephedrine is one component ofa once-popular combination drug used by body builders to increaseenergy and alertness, whereas pseudoephedrine is a nasaldecongestant.a.) Draw the structure of naturally occurring (−)-ephedrine, which has the1R,2S configuration.b.) Draw the structure of naturally occurring (+)-pseudoephedrine, whichhas the 1S,2S configuration.c.) How are ephedrine and pseudoephedrine related?d.) Draw all other stereoisomers of (−)-ephedrine and (+) pseudoephedrine, and give the R,S designation for all stereogeniccenters.e.) How is each compound drawn in part (d) related to (−)-ephedrine?Reaction of C6H5CH2CH2OH with CH3COCl affords compound W, whichhas molecular formula C10H12O2. W shows prominent IR absorptions at3088–2897, 1740, and 1606 cm−1. W exhibits the following signals in its1H NMR spectrum: 2.02 (singlet), 2.91 (triplet), 4.25 (triplet), and 7.20–7.35(multiplet) ppm. What is the structure of W?
- Identify the structures of D and E, isomers of molecular formulaC6H12O2, from their IR and 1H NMR data. Signals at 1.35 and 1.60 ppm inthe 1H NMR spectrum of D and 1.90 ppm in the 1H NMR spectrum of Eare multiplets.A chiral amine A having the R configuration undergoes Hofmann elimination to form an alkene B as the major product. B is oxidatively cleaved with ozone, followed by CH3SCH3, to form CH2 = O and CH3CH2CH2CHO. What are the structures of A and B?Propose a structure for D (molecular formula C9H9ClO2) consistent withthe given spectroscopic data. 13C NMR signals at 30, 36, 128, 130, 133,139, and 179 ppm
- A solution of acetone [(CH3)2C=O] in ethanol (CH3CH2OH) in the presence of a trace of acid was allowed to stand for several days, and a new compound of molecular formula C7H16O2 was formed. The IR spectrum showed only one major peak in the functional group region around 3000 cm−1, and the 1H NMR spectrum is given here. What is the structure of the product?The oxygen in water is primarily (99.8%) 16O, but water enriched with theheavy isotope 18O is also available. When a ketone or aldehyde is dissolved inH2O, the isotopic label becomes incorporated into the carbonyl group: R2CPO H2O n R2CPO H2O. Explain.Compounds B and C are isomers with molecular formula C5H9BrO2. The 1H NMR spectrum of compounds B and C are shown below. The IR spectrum corresponding to compound B showed strong absorption bands at 1739, 1225, and 1158 cm-1, while the spectrum corresponding to compound C have strong bands at 1735, 1237, and 1182 cm-1. 1.Based on the information provided, determine the structure of compounds B and C. 2.Assign all peaks in 1H NMR spectrum of compounds B and C.
- Compound C has molecular formula C5H8O. The IR, mass, 1H-NMR, and 13C-NMR spectra are shown below. Suggest a structure for C and explain your reasoning.The IR spectrum of compound X (C8H15OCl) shows an absorption at 1800cm-1. Which functional groups are likely to be present?Compound A, C8H10O, has the IR and 1H NMR spectra shown. Propose a structure consistent with the observed spectra, and label each peak in the NMR spectrum. Note that the absorption at 5.5 î disappears when D2O is added.